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Finding the Fourth Proportional to 70,818.66, 106,229.00 and 28,134.70

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Solution

The fourth proportional to 70,818.66, 106,229.00 and 28,134.70 is: 42,202.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,818.66 : 106,229.00 = 28,134.70 : x
  2. Step 2: Convert to fraction form
    70,818.66/106,229.00 = 28,134.70/x
  3. Step 3: Cross multiply
    70,818.66x = 106,229.00 × 28,134.70
  4. Step 4: Simplify right side
    70,818.66x = 2,988,720,851.06
  5. Step 5: Solve for x
    x = 2,988,720,851.06/70,818.66
  6. Step 6: Final answer
    x = 42,202.45

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.